Junction box for fire-fighting electrical control device

Abstract

The utility model discloses a junction box for a fire-fighting electrical control device, which comprises a box body, two ends of the box body are respectively provided with a wire inlet and a wire outlet, the box body comprises a base and an upper cover, and a circuit board and other electrical elements are placed in the box body; an upper positioning block is arranged in the upper cover, and a lower positioning block is arranged in the base; the upper positioning block and the lower positioning block are arranged in a staggered mode. According to the utility model, the upper positioning block and the lower positioning block are arranged in a staggered manner, so that the circuit board is time-saving and convenient to plug, fix and disassemble. And through the arrangement of the knob type fuse seat, the fuse is fused under the condition that the voltage and the current are unstable, and the circuit board is protected from being damaged, so that the whole machine is effectively protected. The knob type fuse seat is convenient to replace, and maintenance and inspection after use are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment, in particular to a junction box for a fire-fighting electrical control device. Background Art

[0002] A lot of smoke is usually produced during a fire. The so-called smoke is a mixture of gaseous and solid substances and air that contains a lot of heat and is generated by the thermal decomposition of substances during the combustion reaction. 60% to 80% of the deaths in fires are related to the smoke produced during the fire. The smoke not only hinders the escape of the escapees, causing the escapees to suffocate due to lack of oxygen, but also hinders the firefighters from entering the fire scene to put out the fire. Therefore, smoke exhaust work is particularly important when a fire occurs. The smoke exhaust work is mainly completed by the fire smoke exhaust system, which consists of exhaust ducts, pipe wells, fire dampers, door switch equipment, smoke exhaust fans and other equipment. The fire smoke exhaust fan is an important part of the firefighting equipment. It can effectively remove smoke and harmful gases from the fire scene and ensure the safety of personnel escape. Therefore, the fire electrical control device of the fire smoke exhaust fan is particularly important.

[0003] The Chinese patent of the authorization announcement number CN218183708U, arc-proof plate slot of the fire smoke exhaust fan box, discloses the arc-proof plate slot of the fire smoke exhaust fan box, including the arc-proof plate slot of the fire smoke exhaust fan box, including a cover body, two first clamping blocks are fixedly arranged on one side of the cover body, the two first clamping blocks are fixedly arranged with a first limit clamping slot inside, a circuit board is clamped between the two first limit clamping slots, two second clamping blocks are fixedly arranged on one side of the cover body and close to the circuit board, the two second clamping blocks are fixedly arranged with a second limit clamping slot inside, one side of the two second clamping blocks are threaded with fixing bolts, and an arc-proof plate is clamped between the two second limit clamping slots. In the utility model, the arc-proof plate forms a spatial isolation within a certain range, so that even if the components of the circuit board fail and produce an arc, the entire circuit board will not be damaged, which plays a good protective role.

[0004] Since the circuit board itself is an integrated component and has a low cost, it is difficult to repair some components after they are damaged. On-site personnel do not have the ability to repair them and need to return them to the factory for repair, which makes the fire-fighting equipment unusable for a long time. Moreover, the cost of replacing a new circuit board is not much different from that of repairing a circuit board. The actual situation on site is to directly replace the new circuit board. Therefore, eliminating the damage of the circuit board from the source and making the circuit board easy to disassemble and assemble are the problems that need to be solved at present. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a junction box for a fire protection electrical control device, which saves time and is convenient for inserting and removing the circuit board through the staggered arrangement of the upper positioning block and the lower positioning block.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a junction box for a fire electrical control device, comprising a box body, wherein both ends of the box body are respectively provided with a line inlet and a line outlet, the box body comprises a base and an upper cover, and the box body is used to place circuit boards and other electrical components; an upper positioning block is provided in the upper cover, and a lower positioning block is provided in the base; the upper positioning block and the lower positioning block are staggered.

[0007] As a preferred technical solution of the utility model: there are two groups of upper positioning blocks and two groups of lower positioning blocks.

[0008] As a preferred technical solution of the utility model: a fuse hole is provided on the upper cover, and the fuse hole is used to install a knob-type fuse seat.

[0009] As a preferred technical solution of the utility model: a slide groove is arranged on the upper cover, and a controller is slidably connected to the slide groove.

[0010] As a preferred technical solution of the utility model: a rotary switch is arranged on the upper cover.

[0011] As a preferred technical solution of the utility model: a heat dissipation port is arranged on the base, and the heat dissipation port is composed of a plurality of heat dissipation holes distributed in an array.

[0012] As a preferred technical solution of the utility model: there are two groups of outlets.

[0013] The utility model has the following beneficial effects:

[0014] 1. The staggered setting of the upper positioning block and the lower positioning block saves time and is convenient for the installation and removal of the circuit board.

[0015] 2. The setting of the knob-type fuse holder can prevent the fuse from melting when the voltage and current are unstable, thus protecting the circuit board from being damaged and effectively protecting the whole machine. The knob-type fuse holder is easy to replace and is convenient for maintenance and inspection after use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the overall structure of the left viewing direction;

[0018] Figure 3 It is a schematic diagram of the overall structure of the upper cover;

[0019] Figure 4 for Figure 3 A top view of

[0020] Figure 5 is a schematic diagram of the overall structure of the base;

[0021] Figure 6 for Figure 5 A top view of

[0022] Figure 7 It is a schematic diagram of the overall structure of two outlets;

[0023] In the figure, 1, box body; 2, line inlet; 3, line outlet; 4, base; 5, upper cover; 6, upper positioning block; 7, lower positioning block; 8, stopper; 9, support column; 10, fuse hole; 11, knob-type fuse holder; 12, first positioning block; 13, slide slot; 14, controller; 15, card slot; 16, rotary switch; 17, heat dissipation port; 18, heat dissipation hole; 19, terminal block slot; 20, limit card slot. DETAILED DESCRIPTION

[0024] In order to make the purpose and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0025] like Figure 1-Figure 2 As shown, the embodiment of the utility model provides a junction box for a fire electrical control device, including a box body 1, and the two ends of the box body 1 are respectively provided with an inlet 2 and an outlet 3, and the box body 1 includes a base 4 and an upper cover 5, and the base 4 and the upper cover 5 are movably connected. In this embodiment, it is preferred that the base 4 and the upper cover 5 are connected by bolts. The interior of the box body 1 is used to place circuit boards and other electrical components; an upper positioning block 6 is provided in the upper cover 5, and a lower positioning block 7 is provided in the base 4; the upper positioning block 6 and the lower positioning block 7 are staggered and used for inserting circuit boards. The opening shape of the upper positioning block 6 and the lower positioning block 7 is "L" shaped, and the opening directions of the upper positioning block 6 and the lower positioning block 7 are opposite, and the two are staggered to form a card slot 15 for the circuit board. In this embodiment, the upper positioning block 6 and the lower positioning block 7 are preferably two groups, which are respectively arranged in the base 4 and the upper cover 5 according to the length of the circuit board. The staggered setting of the upper positioning block 6 and the lower positioning block 7 saves time and is convenient when inserting and disassembling the circuit board.

[0026] like Figure 3-Figure 6As shown, in order to prevent and enhance the stability of the circuit board during use, multiple groups of blocks 8 are arranged in the upper cover 5, and the blocks 8 are arranged opposite to the two groups. The blocks 8 cooperate with the lower positioning block 7 to stabilize the circuit board. It can be understood that the blocks 8 can also be arranged in a staggered manner, that is, the blocks 8 cooperate with the lower positioning block 7 and the upper positioning block 6 respectively to stabilize the circuit board; or the blocks 8 are also arranged in the base 4, which can also stabilize the circuit board. A support column 9 is arranged below the lower positioning block 7, and the height of the support column 9 is determined according to the width of the circuit board in actual use. A fuse hole 10 is arranged on the upper cover 5, and a knob-type fuse seat 11 is arranged in the fuse hole 10. The fuse hole 10 is located on the outside of the upper positioning block 6. The knob-type fuse seat 11 is used to connect the circuit board and the power supply together. When the voltage and current are unstable, the fuse is blown to protect the circuit board from being damaged, thereby effectively protecting the whole machine. At the same time, the knob-type fuse seat 11 is easy to replace, which is convenient for maintenance and inspection after use. Two sets of first positioning blocks 12 are also provided on the base 4. The two sets of first positioning blocks 12 are L-shaped and are relatively arranged on the sides of the line inlet 2 of the base 4 to position or constrain cables, contactors, circuit breakers, relays and other devices. The base 4 is also provided with a terminal row slot 19 for placing a terminal row, which is used to connect an external fire signal when in use.

[0027] The upper cover 5 is provided with a slide groove 13, and a controller 14 is slidably connected to the slide groove 13; a limit card groove 20 is provided on one side of the slide groove 13, and the limit card groove 20 is used to place the buckle of the controller 14, so as to facilitate the installation and removal of the controller 14. A rotary switch 16 is provided on the upper cover 5, and the rotary switch 16 is used to manually start the smoke exhaust fan. A heat dissipation port 17 is provided on the base 4, and the heat dissipation port 17 is composed of a plurality of heat dissipation holes 18 distributed in a rectangular array. Of course, it can be understood that the heat dissipation holes 18 can also be composed of heat dissipation ports 17 of other shapes, such as circular. The shape of the heat dissipation hole 18 is circular, square, etc., and preferably circular in this embodiment. In this embodiment, it is preferred that there are two groups of heat dissipation ports 17 on the base 4, which are respectively arranged on the two sides of the base 4, and the heat dissipation port 17 is arranged near the heat-prone components, such as near the circuit board.

[0028] Embodiment 2:

[0029] like Figure 7 As shown, the difference from the first embodiment is that in this embodiment, two groups of outlets 3 are provided, and the two groups of outlets 3 can be connected to a high-speed fan and a low-speed fan when in use, thereby improving the flexibility of use.

[0030] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A junction box for a fire electrical control device, characterized in that: The invention comprises a box body (1), wherein two ends of the box body (1) are respectively provided with a line inlet (2) and a line outlet (3), the box body (1) comprises a base (4) and an upper cover (5), and the box body (1) is used to place circuit boards and other electrical components; an upper positioning block (6) is provided in the upper cover (5), and a lower positioning block (7) is provided in the base (4); the upper positioning block (6) and the lower positioning block (7) are staggered.

2. A junction box for a fire protection electrical control device according to claim 1, characterized in that: There are two groups of upper positioning blocks (6) and two groups of lower positioning blocks (7).

3. A junction box for a fire protection electrical control device according to claim 1, characterized in that: The upper cover (5) is provided with a fuse hole (10), and the fuse hole (10) is used for installing a knob-type fuse seat (11).

4. A junction box for a fire protection electrical control device according to claim 1, characterized in that: The upper cover (5) is provided with a slide groove (13), and a controller (14) is slidably connected to the slide groove (13).

5. A junction box for a fire protection electrical control device according to claim 4, characterized in that: The upper cover (5) is provided with a rotary switch (16).

6. A junction box for a fire protection electrical control device according to claim 1, characterized in that: The base (4) is provided with a heat dissipation port (17), and the heat dissipation port (17) is composed of a plurality of heat dissipation holes (18) distributed in an array.

7. A junction box for a fire protection electrical control device according to any one of claims 1 to 6, characterized in that: The line outlets (3) have two groups.

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